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8. Being a triprotic acid, the acidity of arsenic acid is described by three equilibria. K...
9) Arsenic acid (H,AsOa)is triprotic, wih K5.5X103, K, 1.7X107, and K,y 5.1X102. What is the pH...
9) Arsenic acid (H,AsOa)is triprotic, wih K5.5X103, K, 1.7X107, and K,y 5.1X102. What is the pH of a 0.80 M solution of arsenic acid? 10) Explain why some salts produce neutral solutions while others produce solutions that are acidic or basic. (10 pts.) 11) What is the pH of a 0.84 M solution of NaCN (K, of HCN-6.2X1010)
I need help! 68 14.7 Polyprotic Acids in acid (H,PO 14.7 CN- -.15 c. NaCN K...
I need help!
68 14.7 Polyprotic Acids in acid (H,PO 14.7 CN- -.15 c. NaCN K for HCN is 6.2 X 10-10 d. (CH3)2NHCI Kb for (CH3)3N is 5.3 X 105 e. (CH3)2NHCN f. Cu(CIO4)2 10. In aqueous solution, ammonia reacts according to the following INT 9. Consider an aqueous solution of each o neutral, acidic, or basic. If the solutions are acidic or basi -HOL an aqueous solution of each of the following salts. For each salt, state whether...
need help with 7 and 8. also did I do number nine right? • Write the...
need help with 7 and 8. also did I do number nine right?
• Write the ionization cautions for the dissociation of the diprotic acid, H,C,04. called oxalic acid. The following dissociation consta owing dissociation constants were located on a scrap piece of paper near the bottle of oxalic acid in the chemical room: 6.40 X 10 and 5.91 X 102. Assign cach equation you have written one of these values and explain your reasoning. H₂C₂O4 8. Given the K,...
1. Write the dissociation reaction and the corresponding K, equilibrium expression for each of the following...
1. Write the dissociation reaction and the corresponding K, equilibrium expression for each of the following )HCN bHOC.H 2. You may need Table 14.2 to answer the following questions a) Which is the stronger base, CT or HO b) Which is the stronger base, HiO or NO? c) which is the stronger base, Cr or OCH,7 3. Calculate the [H"1 of each of the following solutions at 25 C. Identity each solution as neutral, acidic, or basic. a) [OH] ....
Chem 110B Name: Acid-Base Equilibria Pre-Lab 1. You have three beakers containing acidic solutions of the...
Chem 110B Name: Acid-Base Equilibria Pre-Lab 1. You have three beakers containing acidic solutions of the same volume. Beaker AS has a label of "0.1 M hydrochloric acid". Representative views of the acid molecules (water is omitted) in each beaker are below: C =HA O =A O=H a. Circle which of the following could be in beaker B. 0.1 M HNO 0.2 M HNO2 0.3 M HNO2 0.2 M HCl b. Explain your reasoning for part a. 0.3 M HCI...
2 Short Answer Questions: Worth 3.5 points each 1. In the reaction H:CO, + HO HCOS...
2 Short Answer Questions: Worth 3.5 points each 1. In the reaction H:CO, + HO HCOS + H0", the Bronsted acids are a. H-COs and H:O 5. H O" and H:CO c. HCOs and H:COs d. H:COs and HCOs 2. Which one of these statements about strong acids is trac All strong acids have H atoms bonded to electronegative oxygen atoms Strong acids are 100 % ionized in water Strong acids are very concentrated acids Strong acids produce solutions with...
A buffer solution is able to maintain a constant pH when small amounts of acid or...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
I need help with the problem in the last photo.. I thought I’d post my lab...
I need help with the problem in the last photo.. I thought I’d
post my lab explanation and data if that helps you get a better
understanding, but it’s just the question at the end. I know I need
to use the Henderson Hasselbach equation.. so... 4.70 = pKa + log(
[acetate-ion] / [acetic-ion] ) and solve for pKa, then Ka.. but how
do I find the concentrations to put in the log fraction?
Thanks, in advance!
Learning Objectives: 1....
Titration: Acids and Bases 2. How can you determine which acid is diprotic? 3. using the...
Titration: Acids and Bases
2. How can you determine which acid is diprotic?
3. using the answers to questions one and two, which acid is
diprotic?
4. Which base has more hydroxide ions per molecule?
Acid Volume Base Base Initial Volume (mL) Base Final Volume (mL) Volume of Base Used (mL) Acid: Base Ratio Acid 1 20 mL Base 1 50 mL 34.5 15.5 4:3 Acid 2 20 mL Base 1 Acid 1 20 mL Base 2 Acid 2 20...
It's a weak acid strong base titration Experiment 4: Identification of an unknown acid by titration...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
9) Arsenic acid (H,AsOa)is triprotic, wih K5.5X103, K, 1.7X107, and K,y 5.1X102. What is the pH of a 0.80 M solution of arsenic acid? 10) Explain why some salts produce neutral solutions while others produce solutions that are acidic or basic. (10 pts.) 11) What is the pH of a 0.84 M solution of NaCN (K, of HCN-6.2X1010)
I need help!
68 14.7 Polyprotic Acids in acid (H,PO 14.7 CN- -.15 c. NaCN K for HCN is 6.2 X 10-10 d. (CH3)2NHCI Kb for (CH3)3N is 5.3 X 105 e. (CH3)2NHCN f. Cu(CIO4)2 10. In aqueous solution, ammonia reacts according to the following INT 9. Consider an aqueous solution of each o neutral, acidic, or basic. If the solutions are acidic or basi -HOL an aqueous solution of each of the following salts. For each salt, state whether...
need help with 7 and 8. also did I do number nine right?
• Write the ionization cautions for the dissociation of the diprotic acid, H,C,04. called oxalic acid. The following dissociation consta owing dissociation constants were located on a scrap piece of paper near the bottle of oxalic acid in the chemical room: 6.40 X 10 and 5.91 X 102. Assign cach equation you have written one of these values and explain your reasoning. H₂C₂O4 8. Given the K,...
1. Write the dissociation reaction and the corresponding K, equilibrium expression for each of the following )HCN bHOC.H 2. You may need Table 14.2 to answer the following questions a) Which is the stronger base, CT or HO b) Which is the stronger base, HiO or NO? c) which is the stronger base, Cr or OCH,7 3. Calculate the [H"1 of each of the following solutions at 25 C. Identity each solution as neutral, acidic, or basic. a) [OH] ....
Chem 110B Name: Acid-Base Equilibria Pre-Lab 1. You have three beakers containing acidic solutions of the same volume. Beaker AS has a label of "0.1 M hydrochloric acid". Representative views of the acid molecules (water is omitted) in each beaker are below: C =HA O =A O=H a. Circle which of the following could be in beaker B. 0.1 M HNO 0.2 M HNO2 0.3 M HNO2 0.2 M HCl b. Explain your reasoning for part a. 0.3 M HCI...
2 Short Answer Questions: Worth 3.5 points each 1. In the reaction H:CO, + HO HCOS + H0", the Bronsted acids are a. H-COs and H:O 5. H O" and H:CO c. HCOs and H:COs d. H:COs and HCOs 2. Which one of these statements about strong acids is trac All strong acids have H atoms bonded to electronegative oxygen atoms Strong acids are 100 % ionized in water Strong acids are very concentrated acids Strong acids produce solutions with...
A buffer solution is able to maintain a constant pH when small amounts of acid or base are added to the buffer. Consider what happens when 1 mL of a 5 M solution is added or 0.005 mol of HCl are added to a 100.0 mL solution acetic acid buffer that contains 0.0100 mol of Acetic acid, HC,H,O,, and 0.0100 mol of sodium acetate, NaC,H,O,. The initial concentration of both the acid and the base are 0.0100 mol/ 0.1000 L...
I need help with the problem in the last photo.. I thought I’d
post my lab explanation and data if that helps you get a better
understanding, but it’s just the question at the end. I know I need
to use the Henderson Hasselbach equation.. so... 4.70 = pKa + log(
[acetate-ion] / [acetic-ion] ) and solve for pKa, then Ka.. but how
do I find the concentrations to put in the log fraction?
Thanks, in advance!
Learning Objectives: 1....
Titration: Acids and Bases
2. How can you determine which acid is diprotic?
3. using the answers to questions one and two, which acid is
diprotic?
4. Which base has more hydroxide ions per molecule?
Acid Volume Base Base Initial Volume (mL) Base Final Volume (mL) Volume of Base Used (mL) Acid: Base Ratio Acid 1 20 mL Base 1 50 mL 34.5 15.5 4:3 Acid 2 20 mL Base 1 Acid 1 20 mL Base 2 Acid 2 20...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
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